Hi have been on a support plan for the last four weeks as I have had an RI lesson when Ofsted came in. As part of this plan i have been observed every week for an hour a time. In my maths lesson observation yesterday the head suggested my lesson solving word problems with all four operations (im in y5) was too ambitious and the children were not sure what they were doing. However having marked this work 18 out of the 22 in the lesson have solved and answered the questions correctly, surely that must mean the lesson was good as they have understood through modeling and progressed to solving the problems themselves, have i got this wrong? is this not the purpose of a good lesson that they start at one point and end at another. She also wanted to know why it was all four when some could not carry out column subtraction which i covered this Tuesday-looking at their work again 25 out of 28 successfully completed this lesson too, I am going to show the head this work as i feel her observation is not a true representation of the lesson, is this the right thing to do?